DNS Gurus
Cached · just now
17 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

1 headers
Connection
Performance
close

Caching Headers

0 headers
No caching headers found

Content Headers

2 headers
Content-Length
Content
61
Content-Type
Content
application/json; charset=utf-8

Server Headers

1 headers
Server
Server
envoy

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
sigFraudCheck=2e660873-b735-4f7a-a608-73b735ef7a6d; Max-Age=86400; Expires=Sat, 31 Jan 2026 01:19:19 GMT; Path=/; Domain=.groupon.com

Other Headers

12 headers
Date
Other
Fri, 30 Jan 2026 01:19:19 GMT
X-B-Cookie
Other
8ee12212-b4f3-4730-a122-12b4f327309a
X-Brand
Other
groupon
X-Envoy-Upstream-Service-Time
Other
7
X-External-Request-Id
Other
true
X-Forwarded-Proto
Other
https,https
X-Mtls-Upstream-Time
Other
1
X-Original-Request-Id
Other
f7f344a1-7e86-477e-a552-127fc793e860
X-Request-Id
Other
f7f344a1-7e86-477e-a552-127fc793e860
X-Request-Originated-From
Other
envoy-tls-side-car--ingress-https
X-Response-Served-From
Other
api-proxy--public--us-central1--default--conveyor-gcp-stable14
X-Signifyd-Cookie
Other
2e660873-b735-4f7a-a608-73b735ef7a6d

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching